[beebeepka]

If possible, I recommend ventilation by creating a current by opening the front door and cycling every room (windos, balcony doors) of your apartment.

I do this every day regardless of the season. Works best during windy weather

[InCityDreams]

*watch out for slamming doors and windows :-) Took me ages to work out how best to perform such in my place, and yes - daily opening, even for 5 minutes - does seem to help (me). I also do it last thing at night. In the morning - a less stuffy apartment. On work days, I'll probably open for a few minutes before going to work, but definitely after getting home.

[oblak]

I use mostly chairs and pillows to prevent doors from slamming. What challenges did you meet at your place?